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Selection bias in innovation studies: A simple test

  • De Rassenfosse, Gaétan
  • Wastyn, Annelies

The study of the innovative output of firms often relies on a count of patents filed at one single office of reference such as the European Patent Office (EPO). Yet, not all firms file their patents at the EPO, raising the specter of a selection bias. Using a novel dataset of the whole population of patents by Belgian firms, we show that the single-office count results in a selection bias that affects econometric estimates of innovation production functions. We propose a methodology to evaluate whether estimates that rely on the single-office count are affected by a selection bias.

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Paper provided by ZEW - Zentrum für Europäische Wirtschaftsforschung / Center for European Economic Research in its series ZEW Discussion Papers with number 12-012.

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Date of creation: 2012
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Handle: RePEc:zbw:zewdip:12012
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  1. Saul Lach & Mark Schankerman, 2006. "Incentives and Invention in Universities," CEP Discussion Papers dp0729, Centre for Economic Performance, LSE.
  2. Nicolas van Zeebroeck & Bruno Van Pottelsberghe, 2008. "Filing strategies and patent value," Working Papers CEB 08-016.RS, ULB -- Universite Libre de Bruxelles.
  3. Bruno Crepon & Emmanuel Duguet & Jacques Mairesse, 1998. "Research, Innovation, and Productivity: An Econometric Analysis at the Firm Level," NBER Working Papers 6696, National Bureau of Economic Research, Inc.
  4. Gaétan de Rassenfosse & Bruno Van Pottelsberghe, 2008. "A Policy Insight into the R&D-Patent Relationship," Working Papers ECARES 2008_007, ULB -- Universite Libre de Bruxelles.
  5. Hulya Ulku, 2007. "R&D, innovation, and growth: evidence from four manufacturing sectors in OECD countries," Oxford Economic Papers, Oxford University Press, vol. 59(3), pages 513-535, July.
  6. Philippe Aghion & Nicholas Bloom & Richard Blundell & Rachel Griffith & Peter Howitt, 2002. "Competition and innovation: an inverted U relationship," IFS Working Papers W02/04, Institute for Fiscal Studies.
  7. Bottazzi, Laura & Peri, Giovanni, 2003. "Innovation and spillovers in regions: Evidence from European patent data," European Economic Review, Elsevier, vol. 47(4), pages 687-710, August.
  8. Richard Blundell & Rachel Griffith & Frank Windmeijer, 1999. "Individual effects and dynamics in count data models," IFS Working Papers W99/03, Institute for Fiscal Studies.
  9. Robert K. Merton, 1935. "Fluctuations in the Rate of Industrial Invention," The Quarterly Journal of Economics, Oxford University Press, vol. 49(3), pages 454-474.
  10. Payne A. Abigail & Siow Aloysius, 2003. "Does Federal Research Funding Increase University Research Output?," The B.E. Journal of Economic Analysis & Policy, De Gruyter, vol. 3(1), pages 1-24, May.
  11. Zvi Griliches, 1998. "Patent Statistics as Economic Indicators: A Survey," NBER Chapters, in: R&D and Productivity: The Econometric Evidence, pages 287-343 National Bureau of Economic Research, Inc.
  12. Crepon, B. & Duguet, E. & Mairesse, J., 1998. "Research Investment, Innovation and Productivity: An Econometric Analysis at the Firm Level," Papiers d'Economie Mathématique et Applications 98.15, Université Panthéon-Sorbonne (Paris 1).
  13. Stoneman, P, 1979. "Patenting Activity: A Re-evaluation of the Influence of Demand Pressures," Journal of Industrial Economics, Wiley Blackwell, vol. 27(4), pages 385-401, June.
  14. Heckman, James J, 1979. "Sample Selection Bias as a Specification Error," Econometrica, Econometric Society, vol. 47(1), pages 153-61, January.
  15. Picci, Lucio, 2010. "The internationalization of inventive activity: A gravity model using patent data," Research Policy, Elsevier, vol. 39(8), pages 1070-1081, October.
  16. Pakes, Ariel & Griliches, Zvi, 1980. "Patents and R&D at the firm level: A first report," Economics Letters, Elsevier, vol. 5(4), pages 377-381.
  17. de Rassenfosse, Gaétan & Dernis, Hélène & Guellec, Dominique & Picci, Lucio & van Pottelsberghe de la Potterie, Bruno, 2013. "The worldwide count of priority patents: A new indicator of inventive activity," Research Policy, Elsevier, vol. 42(3), pages 720-737.
  18. Czarnitzki, Dirk & Kraft, Kornelius & Thorwarth, Susanne, 2009. "The knowledge production of 'R' and 'D'," Economics Letters, Elsevier, vol. 105(1), pages 141-143, October.
  19. Coupe, Tom, 2003. "Science Is Golden: Academic R&D and University Patents," The Journal of Technology Transfer, Springer, vol. 28(1), pages 31-46, January.
  20. Jarno Hoekman & Koen Frenken & Frank van Oort, 2008. "The geography of collaborative knowledge production in Europe," KITeS Working Papers 214, KITeS, Centre for Knowledge, Internationalization and Technology Studies, Universita' Bocconi, Milano, Italy, revised Feb 2008.
  21. Akçomak, I. Semih & ter Weel, Bas, 2008. "Social Capital, Innovation and Growth: Evidence from Europe," IZA Discussion Papers 3341, Institute for the Study of Labor (IZA).
  22. Joaquín Azagra-Caro & Nicolas Carayol & Patrick Llerena, 2006. "Patent Production at a European Research University: Exploratory Evidence at the Laboratory Level," The Journal of Technology Transfer, Springer, vol. 31(2), pages 257-268, 03.
  23. Jerry A. Hausman & Bronwyn H. Hall & Zvi Griliches, 1984. "Econometric Models for Count Data with an Application to the Patents-R&D Relationship," NBER Technical Working Papers 0017, National Bureau of Economic Research, Inc.
  24. Ernst, Holger, 1998. "Industrial research as a source of important patents," Research Policy, Elsevier, vol. 27(1), pages 1-15, May.
  25. Robert M. Salomon & J. Myles Shaver, 2005. "Learning by Exporting: New Insights from Examining Firm Innovation," Journal of Economics & Management Strategy, Wiley Blackwell, vol. 14(2), pages 431-460, 06.
  26. Nicolas van Zeebroeck, 2011. "The puzzle of patent value indicators," Economics of Innovation and New Technology, Taylor & Francis Journals, vol. 20(1), pages 33-62.
  27. Nicolas Carayol, 2007. "Academic incentives and research organization for patenting at a large French university," Post-Print hal-00652488, HAL.
  28. Gourieroux Christian & Monfort Alain & Trognon A, 1982. "Pseudo maximum lilelihood methods : applications to poisson models," CEPREMAP Working Papers (Couverture Orange) 8203, CEPREMAP.
  29. Rentocchini, Francesco, 2011. "Sources and characteristics of software patents in the European Union: Some empirical considerations," Information Economics and Policy, Elsevier, vol. 23(1), pages 141-157, March.
  30. Papke, Leslie E & Wooldridge, Jeffrey M, 1996. "Econometric Methods for Fractional Response Variables with an Application to 401(K) Plan Participation Rates," Journal of Applied Econometrics, John Wiley & Sons, Ltd., vol. 11(6), pages 619-32, Nov.-Dec..
  31. repec:crs:wpaper:9833 is not listed on IDEAS
  32. Juan A. Correa, 2012. "Innovation and competition: An unstable relationship," Journal of Applied Econometrics, John Wiley & Sons, Ltd., vol. 27(1), pages 160-166, 01.
  33. Nicolas Carayol, 2007. "Academic Incentives, Research Organization And Patenting At A Large French University," Economics of Innovation and New Technology, Taylor & Francis Journals, vol. 16(2), pages 119-138.
  34. Dirk Czarnitzki & Bernd Ebersberger & Andreas Fier, 2007. "The relationship between R&D collaboration, subsidies and R&D performance: Empirical evidence from Finland and Germany," Journal of Applied Econometrics, John Wiley & Sons, Ltd., vol. 22(7), pages 1347-1366.
  35. Yuichiro Uchida & Paul Cook, 2007. "Innovation and Market Structure in the Manufacturing Sector: An Application of Linear Feedback Models," Oxford Bulletin of Economics and Statistics, Department of Economics, University of Oxford, vol. 69(4), pages 557-580, 08.
  36. repec:fth:harver:1473 is not listed on IDEAS
  37. Dirk Fornahl & Tom Broekel & Ron Boschma, 2010. "What drives patent performance of German biotech firms? The impact of R&D subsidies, knowledge networks and their location," Papers in Evolutionary Economic Geography (PEEG) 1009, Utrecht University, Section of Economic Geography, revised Aug 2010.
  38. Cincera, Michele, 1997. "Patents, R&D, and Technological Spillovers at the Firm Level: Some Evidence from Econometric Count Models for Panel Data," Journal of Applied Econometrics, John Wiley & Sons, Ltd., vol. 12(3), pages 265-80, May-June.
  39. Gourieroux Christian & Monfort Alain & Trognon A, 1981. "Pseudo maximum likelihood methods : theory," CEPREMAP Working Papers (Couverture Orange) 8129, CEPREMAP.
  40. Tappeiner, Gottfried & Hauser, Christoph & Walde, Janette, 2008. "Regional knowledge spillovers: Fact or artifact?," Research Policy, Elsevier, vol. 37(5), pages 861-874, June.
  41. Michael Fritsch, 2002. "Measuring the Quality of Regional Innovation Systems: A Knowledge Production Function Approach," International Regional Science Review, SAGE Publishing, vol. 25(1), pages 86-101, January.
  42. Valentina Meliciani, 2000. "The relationship between R&D, investment and patents: a panel data analysis," Applied Economics, Taylor & Francis Journals, vol. 32(11), pages 1429-1437.
  43. Richard Gilbert, 2006. "Looking for Mr. Schumpeter: Where Are We in the Competition-Innovation Debate?," NBER Chapters, in: Innovation Policy and the Economy, Volume 6, pages 159-215 National Bureau of Economic Research, Inc.
  44. Richard Blundell & Rachel Griffith & John van Reenen, 1999. "Market Share, Market Value and Innovation in a Panel of British Manufacturing Firms," Review of Economic Studies, Oxford University Press, vol. 66(3), pages 529-554.
  45. Furman, Jeffrey L. & Porter, Michael E. & Stern, Scott, 2002. "The determinants of national innovative capacity," Research Policy, Elsevier, vol. 31(6), pages 899-933, August.
  46. Buesa, Mikel & Heijs, Joost & Baumert, Thomas, 2010. "The determinants of regional innovation in Europe: A combined factorial and regression knowledge production function approach," Research Policy, Elsevier, vol. 39(6), pages 722-735, July.
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